Home / 818,009.79-1,227,080.30-285,519.03

Finding the Fourth Proportional to 818,009.79, 1,227,080.30 and 285,519.03

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Solution

The fourth proportional to 818,009.79, 1,227,080.30 and 285,519.03 is: 428,301.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,009.79 : 1,227,080.30 = 285,519.03 : x
  2. Step 2: Convert to fraction form
    818,009.79/1,227,080.30 = 285,519.03/x
  3. Step 3: Cross multiply
    818,009.79x = 1,227,080.30 × 285,519.03
  4. Step 4: Simplify right side
    818,009.79x = 350,354,776,988.11
  5. Step 5: Solve for x
    x = 350,354,776,988.11/818,009.79
  6. Step 6: Final answer
    x = 428,301.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.